CVE-2026-58534: CWE-122: Heap-based Buffer Overflow in Microsoft Windows 10 Version 1607
Heap-based buffer overflow in Microsoft Input Method Editor (IME) allows an authorized attacker to elevate privileges locally.
AI Analysis
Technical Summary
This vulnerability involves a heap-based buffer overflow in the Microsoft Input Method Editor (IME) on Windows 10 Version 1607 (build 10.0.14393.0). An authorized attacker with local access can exploit this flaw to elevate their privileges, potentially gaining higher system rights. The CVSS v3.1 base score is 8.8, reflecting high impact on confidentiality, integrity, and availability. The vulnerability has been officially fixed by Microsoft, as confirmed by the vendor advisory.
Potential Impact
Successful exploitation allows an authorized local attacker to elevate privileges, potentially gaining administrative control over the affected system. This can lead to full compromise of system confidentiality, integrity, and availability.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58534 to remediate this vulnerability.
CVE-2026-58534: CWE-122: Heap-based Buffer Overflow in Microsoft Windows 10 Version 1607
Description
Heap-based buffer overflow in Microsoft Input Method Editor (IME) allows an authorized attacker to elevate privileges locally.
CVSS v3.1
Score 8.8high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves a heap-based buffer overflow in the Microsoft Input Method Editor (IME) on Windows 10 Version 1607 (build 10.0.14393.0). An authorized attacker with local access can exploit this flaw to elevate their privileges, potentially gaining higher system rights. The CVSS v3.1 base score is 8.8, reflecting high impact on confidentiality, integrity, and availability. The vulnerability has been officially fixed by Microsoft, as confirmed by the vendor advisory.
Potential Impact
Successful exploitation allows an authorized local attacker to elevate privileges, potentially gaining administrative control over the affected system. This can lead to full compromise of system confidentiality, integrity, and availability.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58534 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-07-01T04:33:41.870Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58534","vendor":"Microsoft"}]
Threat ID: 6a5676c068715ace43f0b13f
Added to database: 07/14/2026, 17:49:52 UTC
Last enriched: 08/13/2026, 16:01:46 UTC
Last updated: 08/28/2026, 12:17:19 UTC
Views: 64
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